Imagine gliding across the shimmering waters of Zakynthos on a comfortable glass-bottom boat, with the sun warming your back and the promise of turtle sightings and stunning caves ahead. For around $28 per person, this 3-hour tour from Laganas offers an accessible, family-friendly way to explore some of the island’s most captivating marine sights. Visitors typically love the chance to see loggerhead turtles in their natural environment and marvel at the spectacular limestone formations of the Keri Caves.
What makes this tour particularly appealing is the combination of seaside adventure and relaxation—there’s time to snorkel and swim, enjoy a snack on Marathonisi (Turtle Island), and capture plenty of photos. Two standout features for us are the clear, shallow waters ideal for snorkelers and the knowledgeable guides who keep the trip lively and informative.
A potential drawback? Since the tour doesn’t include hotel pickup, you’ll need to get yourself to the Agios Sostis harbor. Also, swimming inside the caves isn’t permitted, which might disappoint some looking for a more adventurous spelunking experience. This trip suits nature lovers, families, or anyone eager to enjoy Zakynthos’s marine beauty without breaking the bank.
Key Points
- Affordable price for a 3-hour marine adventure
- Opportunity to see loggerhead turtles (Caretta Caretta) in their natural habitat
- Multiple swim stops, including Keri Caves and Marathonisi Island
- Beautiful scenic views of Zakynthos’s coast and marine park
- Comfortable boat with shaded and sunbathing options
- No hotel pickup, so plan your logistics accordingly
When you step aboard the boat in Agios Sostis harbor, you’ll immediately notice the shaded seating and rear sundeck—great spots to relax and soak up the views. The boat itself is described as roomy, which makes a difference during the busy summer months when boats can feel cramped. As you leave the harbor, you’ll cruise along the coast of Zakynthos, feeling the wind in your hair and the sea spray on your face.
You can check availability for your dates here:Keri Caves and Oasi Bay
Your first stop is the Keri Caves, an impressive stretch of limestone formations carved by the sea. These caves are only accessible by boat, making them a must-see for marine scenery fans. The water here is known for its deep blue color and the play of light on the limestone walls, which makes for fantastic photo opportunities.
Most trips include a swim stop at Oasi Bay, an area near the caves perfect for snorkeling or just floating in the calm, clear water. The reviews highlight this as a favorite part, with one traveler noting, “The caves and the sea are simply beautiful and having time for a quick swim and an hour on the beach at Marathonisi was great.” The shallow waters make it easy for swimmers of all levels to enjoy.
Marathonisi Island: Turtle Paradise
The next highlight is Marathonisi, affectionately called Turtle Island because of its importance as a breeding ground for the loggerhead turtles. The island’s small beaches are protected as part of the National Marine Park, meaning that only small portions of the coast are accessible to visitors—yet enough for a relaxing break.
Here, you’ll have free time to explore, sip a drink at a bar, or simply enjoy the scenic views of pine, olive, and oak forests. Several reviews note the thrill of spotting turtles in their natural habitat, which is a highlight of this trip. One reviewer fondly recalls, “To see turtles in their natural habitat was incredible,” emphasizing how special this experience is.
Practical Details of the Tour
The trip duration is about 3 hours, which is enough time to see the key sights without feeling rushed. The price includes your glass-bottom boat ticket, the stop at Marathonisi, and visits to the Keri Caves and Oasi Bay. However, food and drinks are not included but are available for purchase on the island, making it a good idea to bring some snacks and water—especially if you plan to spend extra time exploring.
The meeting point is straightforward: look for the Nautilos Flag in front of the boat in Agios Sostis harbor. The tour operates in English and Greek, with guides often praised for their friendly demeanor and knowledge. You should arrive prepared with sunscreen, swimming gear, a sunhat, and sunglasses. Luggage and large bags are not allowed, so keep your belongings light.
Authentic Experiences and Authentic Reviews
Many travelers mention how well-organized and trustworthy the trip feels, with one reviewer saying, “Very well organized, lovely guide, highly recommend.” Others appreciated the informative nature of the guides and the stunning scenery: “We loved the way the blue light played off the limestone walls of the caves,” one traveler described.
Several reviews emphasize the value for money—for just around $28, you’re getting a compact but comprehensive tour that combines marine wildlife, scenery, and relaxation. And the chance to see turtles in their habitat is often cited as the trip’s main highlight.
More Great Tours NearbyWhat Could Be Improved?
The main critiques revolve around limited swimming inside the caves and the short beach stop on Marathonisi. Some feel the beach is “mediocre,” but this is a minor point given the primary focus on marine scenery and wildlife. Also, since hotel pickup isn’t included, you’ll need to coordinate your arrival at Agios Sostis harbor.
This experience is ideal for nature enthusiasts eager to witness sea turtles in the wild, families with children who appreciate gentle boat trips with multiple swim stops, and budget travelers looking for an affordable way to explore Zakynthos’s marine park. If you love photography, you’ll find plenty of breathtaking scenes of caves and marine wildlife.
It’s also perfect if you prefer a relaxed itinerary with opportunities for snorkeling and beach time without the need for strenuous activity or complex arrangements. However, if you’re after adventure sports or hiking, this tour might not be your best fit.
In our view, this Keri Caves and Turtle Island tour offers a balanced blend of scenic beauty, wildlife watching, and relaxation at a very reasonable price. The boat’s comfort, combined with the expert guides and unique marine sights, creates an experience that’s both fun and educational.
The opportunity to see loggerhead turtles—a species that’s endangered and difficult to spot elsewhere—really elevates this trip’s value. The stunning caves and clear waters make it a visual feast, perfect for photographers or anyone who simply wants to enjoy Zakynthos’s coastal charm.
While not overly long, the tour hits all the highlights of the marine park and leaves you with lasting memories of the island’s natural beauty. It’s well-suited for families, couples, and solo travelers eager to combine sightseeing with a bit of seaside fun.
Is hotel pickup included?
No, you’ll need to make your way to Agios Sostis harbor on your own.
How long does the tour last?
The tour runs for approximately 3 hours, including stops for swimming and sightseeing.
Can I swim inside the caves?
No, swimming inside the caves isn’t permitted, but you can enjoy swimming in the Oasi Bay and other stops.
What should I bring?
Bring sunglasses, a sun hat, swimwear, a towel, sunscreen, snorkeling gear if you have it, and some snacks or drinks for the island stop.
Is the boat comfortable?
Yes, the boat is described as roomy, with shaded seating and a rear sundeck for sunbathing.
Are food and drinks included?
No, but they are available for purchase on Marathonisi.
Is it suitable for children?
Yes, the relaxed pace and shallow swimming areas make it good for families with children.
What if I want to cancel?
You can cancel up to 24 hours in advance for a full refund.
Will I see turtles?
Many travelers do spot turtles in their natural habitat, making this a memorable wildlife experience.
What languages are spoken?
Guides speak Greek and English.
If you’re looking for a value-packed, wildlife-focused boat trip that combines scenic caves, marine wildlife, and a relaxing island stop, this tour from Zakynthos should definitely be on your list. It’s a wonderful way to appreciate the island’s marine environment and enjoy some quality time on the water.
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